main.cpp: prepare wayfire for software rendering coming in wlroots 0.19 #4831

Job	Run time
Test with clang/glibc/libc++/lld on Arch Linux	3m 19s
Check code style with uncrustify	46s
Test with GCC/musl/libstdc++/BFD on Alpine Linux	3m 39s
	7m 44s

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